Question 1160802
John    3k
Ken      k
Joy      j



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Three years ago, he is four times as old as Joy.
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"He" is "John".
Not "is", but "WAS".
{{{3k-3=4(j-3)}}}
{{{3k-3=4j-12}}}
{{{3k=4j-9}}}
not yet to answer the question.


I suspect either a mistake in the description, or some information was excluded.